import React, { Component } from 'react'
import { nanoid } from 'nanoid'
import {PropTypes} from 'prop-types'
import './index.css'

export default class Header extends Component {
  static propTypes={
    addTodo:PropTypes.func.isRequired
  }
  handleKeyUp=(event)=>{
    const {keyCode,target} =event
    if(keyCode !== 13 || target.value.trim()==='') return
    // console.log(target.value);
    const todo = {id:nanoid(),name:target.value,done:false}
    this.props.addTodo(todo)
    target.value=''
  }
  render() {
    return (
      <div className="todo-header">
          <input onKeyUp={this.handleKeyUp} type="text" placeholder="请输入你的任务名称，按回车键确认"/>
      </div>
    )
  }
}
